Loic Wong

Level 1 (8 points)

Windows Software

Q: Bootcamp - installed windows 10 and resized the partition with Mini Partition Tool, then OSX boot is missing

1. I installed the window 10 N with Bootcamp

2. I found the windows space is not enough to install office so switch to OSX to increase the space of other part

3. Then, I switch to windows downloaded a Mini Partition Tool to delete the allocated part to make it usable for windows

4. Finally, I cannot see the OSX boot except the windows boot

MacBook Pro with Retina display, iOS 9.3.4

Posted on Aug 22, 2016 2:32 PM

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Q: Bootcamp - installed windows 10 and resized the partition with Mini Partition Tool, then OSX boot is missing

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by Loner T,

Loner T Aug 22, 2016 3:12 PM in response to Loic Wong
Level 7 (23,663 points)

Safari

Aug 22, 2016 3:12 PM in response to Loic Wong

Mini Partition Tool is one of the worst tools to be used on a Mac. It causes more problems than it addresses. What year/model is your Mac?
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by Loic Wong,

Loic Wong Aug 22, 2016 5:55 PM in response to Loner T
Level 1 (8 points)

Windows Software

Aug 22, 2016 5:55 PM in response to Loner T

The model of laptop is i7-4770HQ @ 2.20GHz , 16GB RAM, 256 SSD, 2014
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by Loner T,

Loner T Aug 22, 2016 6:44 PM in response to Loic Wong
Level 7 (23,663 points)

Safari

Aug 22, 2016 6:44 PM in response to Loic Wong

Do not make any further partitioning changes, otherwise you will lose data.

Please post the output of

diskutil list
diskutil cs list
sudo gpt -vv -r show /dev/disk0
sudo fdisk /dev/disk0
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by Loic Wong,

Loic Wong Aug 22, 2016 7:17 PM in response to Loner T
Level 1 (8 points)

Windows Software

Aug 22, 2016 7:17 PM in response to Loner T

Thanks Loner. The problem is I cannot login to to OSX, I tried to push command+option+r+p, command+r, option+command+r, all didn't work. I can only login to windows 10. I tried to reinstall the OSX via Wi-Fi, however, it always jump into the Windows 10 when I pushed the command+option+p+r.
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by Loner T,

Loner T Aug 22, 2016 7:22 PM in response to Loic Wong
Level 7 (23,663 points)

Safari

Aug 22, 2016 7:22 PM in response to Loic Wong

Can you run SMC and NVRAM Reset and then try to use the Alt/Option key? If it does not work, install GPT Fdisk on the Windows side - https://sourceforge.net/projects/gptfdisk/ - and we need to inspect what was done by the MP Tool.
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